#pragma once
#include<iostream>
#include<stdlib.h>
using namespace std;

class Date
{
public:
	Date(int year = 1, int month = 1, int day = 1);
	void Print();
	//inline
	int GetMonthDay(int year, int month)
	{
		static int monthDayArray[13] = { -1,31,28,31,30,31,30,31,31,30,31,30,31 };

		if (month && (year % 4 == 0 && year % 100 != 0 || year % 400 == 0))
		{
			return 29;
		}

		return monthDayArray[month];
	}
	
	bool operator<(const Date& d);
	bool operator<=(const Date& d);
	bool operator>(const Date& d);
	bool operator>=(const Date& d);
	bool operator==(const Date& d);
	bool operator!=(const Date& d);

	// d1 += 
	Date& operator+=(int day);
	Date operator+(int day);

	// d1 -= 
	Date& operator-=(int day);
	Date operator-(int day) const;
private:
	int _year;
	int _month;
	int _day;
};